The Greenies build is one of the most interesting places I've encountered in a while. When you arrive, it's not immediately clear where you are or what you should do. Subtle arrows are a clue.



Then, you walk through a hole in the wall into what seems to be a house.



But further exploration reveals that you are actually in a dollhouse inside a much larger house.



It's a convincing exploration in scale, and there are plenty of things to do, for example - I ran around in this hamster wheel for a while.